Actually for token or altcoin is not really secure, first depend on not your key is not your coins and secondly many exchange delisting some token without any permission and potential loss your coins if not withdrawal depend on their deadline days. I had bad experienced when trading with meme token on Hotbit exchange, giving few days left for withdrawing the delisting token and so busy without checking the new update of Hotbit announcement until my token holding delisting on exchange market for trading but not appear yet in my fund. If you want hold meme coins or token better hold in your wallet and not recommended on exchange wallet.